Revert "Add raster Easy Bee branding assets"

This reverts commit d560b2fead.

iso/builder/config/bootloaders/grub-pc/live-theme/theme.txt

@@ -1,6 +1,5 @@
 desktop-color: "#000000"
-desktop-image: "background.png"
-title-color: "#42b6ff"
+title-color: "#f5a800"
 title-font: "Unifont Regular 16"
 title-text: ""
 message-font: "Unifont Regular 16"
@@ -14,7 +13,7 @@ terminal-font: "Unifont Regular 16"
         height = 20
         text = "@KEYMAP_SHORT@"
         align = "center"
-        color = "#24425b"
+        color = "#5a4800"
         font = "Unifont Regular 16"
 }
 
@@ -22,11 +21,11 @@ terminal-font: "Unifont Regular 16"
 + boot_menu {
         left = 20%
         width = 60%
-        top = 70%
-        height = 30%-80
-        item_color = "#91d8ff"
+        top = 62%
+        height = 38%-80
+        item_color = "#c88000"
         item_font = "Unifont Regular 16"
-        selected_item_color= "#f5f7fb"
+        selected_item_color= "#f5a800"
         selected_item_font = "Unifont Regular 16"
         item_height = 16
         item_padding = 0
@@ -45,8 +44,8 @@ terminal-font: "Unifont Regular 16"
         width = 60%
         font = "Unifont Regular 16"
         text_color = "#0a0a00"
-        fg_color = "#42b6ff"
-        bg_color = "#101824"
-        border_color = "#24425b"
+        fg_color = "#f5a800"
+        bg_color = "#2a2200"
+        border_color = "#5a4800"
         text = "@TIMEOUT_NOTIFICATION_LONG@"
 }